For example, it has a long history of use as a sea sickness remedy, and there is some evidence that it may be as effective as prescription medication (3).

Ginger may also relieve nausea and vomiting after surgery, and in cancer patients undergoing chemotherapy (4, 5).

But it may be the most effective when it comes to pregnancy-related nausea, such as morning sickness.

According to a review of 12 studies that included a total of 1,278 pregnant women, 1.1-1.5 grams of ginger can significantly reduce symptoms of nausea (6).

However, ginger had no effect on vomiting episodes in this study.

Although ginger is considered safe, talk to your doctor before taking large amounts if you are pregnant. Some believe that large amounts can raise the risk of miscarriage, but there are currently no studies to support this.

Bottom Line: 1-1.5 grams of ginger can help prevent various types of nausea. This applies to sea sickness, chemotherapy-related nausea, nausea after surgery and morning sickness.